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Haldol is a brand name associated with haloperidol, a conventional antipsychotic. The short-acting Haldol brand is no longer marketed in the United States, although generic haloperidol products are available. Haldol Decanoate is a separate, long-acting injection used for schizophrenia in certain adults.
read more about haldol ...Haloperidol changes dopamine signaling in the brain. This can help control symptoms of psychotic disorders. Its effects and dosing depend on whether a short-acting or long-acting formulation is used.
Short-acting haloperidol can be taken by mouth or given as an injection. Haldol Decanoate is injected into a muscle, usually every four weeks. A clinician establishes the long-acting dose after the patient has taken a stable dose of immediate-release oral haloperidol.
Haloperidol can cause sleepiness, restlessness, stiffness, or involuntary movements. Serious reactions can include a high fever with rigid muscles or an abnormal heart rhythm. Seek medical attention promptly for severe movement symptoms, fainting, or fever with marked stiffness.
Antipsychotics, including haloperidol, carry an increased risk of death in older adults with dementia-related psychosis. Haldol Decanoate is not approved to treat dementia-related psychosis. Tell your clinician about heart rhythm problems and all other medicines you take.
Haldol is a brand name associated with haloperidol. The formulation matters when comparing a short-acting product with Haldol Decanoate.
MedlinePlus lists the branded short-acting product as no longer on the market. Generic haloperidol products remain available.
It is a long-acting haloperidol injection used for schizophrenia in adults previously stable on oral haloperidol. A healthcare professional gives it into a muscle.
No. Haloperidol products are not approved for dementia-related psychosis and carry a warning about increased mortality in older adults with this condition.
Haloperidol. MedlinePlus. https://www.medlineplus.gov/druginfo/meds/a682180.html. Date Accessed October 6, 2026.
Haloperidol. StatPearls (NCBI Bookshelf). https://www.ncbi.nlm.nih.gov/books/NBK560892/. Date Accessed October 6, 2026.
Haloperidol (intramuscular route) - Side effects & uses. Mayo Clinic. https://www.mayoclinic.org/drugs-supplements/haloperidol-intramuscular-route/description/drg-20072783. Date Accessed October 6, 2026.
Haloperidol (oral route) - Side effects & dosage. Mayo Clinic. https://www.mayoclinic.org/drugs-supplements/haloperidol-oral-route/description/drg-20064173. Date Accessed October 6, 2026.
Haloperidol Injection. MedlinePlus. https://medlineplus.gov/druginfo/meds/a615023.html. Date Accessed October 6, 2026.